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oldman · 09-02-2020, 05:53 PM

I built my engine for 100K, change springs at 50K. Cam Motion sub .600 lift, Johnson lifters , they are .045 taller than LS7 lifters, so probably going to need LS7 pushrods which are 7.800 or .050 shorter than LT1 pushrods. On my car the Johnson lifter and LS7 pushrods put the plungers at .75 preload or near center of travel. I'll let the crowd talk about .35 preload or . 135 (for near solid). I'm just thankful the Johnson are not only quality they have a BOAT LOAD of travel .215. It is V ERY hard to screw up on that. At least I hope so.

https://www.texas-speed.com/p-5629-j...s-engines.aspx

09-02-2020, 05:53 PM	#19
oldman Drives: SS 6 speed of course Join Date: Jan 2016 Location: Hilo, HI Posts: 4,346	I built my engine for 100K, change springs at 50K. Cam Motion sub .600 lift, Johnson lifters , they are .045 taller than LS7 lifters, so probably going to need LS7 pushrods which are 7.800 or .050 shorter than LT1 pushrods. On my car the Johnson lifter and LS7 pushrods put the plungers at .75 preload or near center of travel. I'll let the crowd talk about .35 preload or . 135 (for near solid). I'm just thankful the Johnson are not only quality they have a BOAT LOAD of travel .215. It is V ERY hard to screw up on that. At least I hope so. https://www.texas-speed.com/p-5629-j...s-engines.aspx __________________ Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.